BMW E81 E90 E91 E60 Petrol Alternator Generator 150A 7550967

BMW E81 E90 E91 E60 Petrol Alternator Generator 150A is an original component from the Alternators and generators group, designed for BMW petrol engines. This used OEM alternator ensures proper battery charging, stable power supply for the electrical system, and full compatibility with the vehicle's factory electronics.

Specifications and technical data

• SKU: 7550967
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7550967
• Substitutable numbers: 12317543083, 7543083, 12317542529, 7542529, 7550967
• Fuel type: Petrol
• Category: Alternators & Generators

Purpose and compatibility

The alternator has been designed to work in BMW E60, E87, and E90 series models with petrol engines. This ensures a perfect fit with factory mounts, correct pulley alignment, and compliance with electrical system parameters, which facilitates installation and reduces the risk of charging issues.

Thanks to the original OEM design, the alternator works seamlessly with the factory engine management system, safety systems, and comfort equipment, maintaining stable voltage across the entire load range.

Operating parameters and function in the electrical system

The 150A alternator is adapted to support the extensive electrical system typical of modern BMWs – from basic consumers and comfort systems to advanced multimedia systems. This power reserve allows for safe operation even when multiple electrical consumers are active simultaneously.

The alternator is responsible for:

• stable battery charging while driving,
• supplying power to all vehicle electrical systems,
• maintaining appropriate system voltage under variable loads.

A properly selected alternator reduces voltage drops, light flickering, and electronic errors, which translates into predictable vehicle performance.

Benefits of using an original BMW alternator

Using an original BMW alternator instead of a worn or faulty component allows you to maintain the factory operating parameters of the charging system. Key advantages include:

• Full compatibility with the electrical system – no need for wiring or mounting modifications.
• Properly selected current output – adjusted to the load typical for E60, E87, and E90 models.
• Compatibility with factory diagnostic systems – correct readings and no unwanted error messages.

For the user, this means predictable vehicle behavior, stable power supply, and a lower risk of failures resulting from mismatched aftermarket parts.

Condition, verification, and installation

The offered alternator is a used part, which allows you to combine an attractive price with the preservation of original BMW specifications. Before installation, a standard check of the charging system – including the condition of the accessory belt, tensioner, and ground connections – is recommended to fully utilize the component's capabilities.

Due to its factory origin, installation is similar to a plug-and-play process: the alternator fits the designated space, works with original connectors, and does not require mechanical adaptation. This is a particularly beneficial solution for repairs where time and fitment certainty are essential.

BMW Alternators and generators – expansion and modernization

If you are planning a comprehensive repair or modernization of your BMW engine bay and need other elements from the same group, such as additional alternators, generators, or related mounting components, check out the available parts in the BMW Alternators and generators category.

Why choose a used OEM part

When choosing an alternator for a BMW, a dilemma often arises: used OEM part or a new aftermarket replacement. In many cases, an original component, even if used, provides better fitment, predictable durability, and compliance with factory parameters than cheaper alternatives.

If you want to learn about practical selection criteria and specific examples from popular models, it is worth reading the article 5 reasons why a used OEM part is a better choice than an aftermarket replacement, which simply compares both options and helps you make an informed purchasing decision.